Agents of S.H.I.E.L.D.'s Ming-Na Wen and Blair Underwood Share the Real Source of Their Chemistry (VIDEO)

If you think Ming-Na Wen and Blair Underwood have amazing chemistry on-screen, there's a reason: the two actors go way, way back as college friends to their Carnegie Mellon days.

"Ming is one of my long-standing friends in this town," says Underwood, who also notes that their very first Marvel's Agents of S.H.I.E.L.D. scene took place on a college campus. "It's real!," adds Ming-Na about the bond they have as actors, which helps their characters. But, jokes Underwood, Clark Gregg is still his favorite person on set.